operator`s manual for xcr medium modular rifle system

WARNING!!!
READ THIS MANUAL BEFORE USE
OPERATOR’S MANUAL
FOR
XCR MEDIUM MODULAR RIFLE SYSTEM
(XCR-M)
ROBINSON
ARMAMENT CO.
925 W 100 North Suite A
North Salt Lake, UT 84054
www.robarm.com
© 2012 Robinson Armament Co. All Rights Reserved
Patented
WARNING
THE FOLLOWING ACTIONS ARE DANGEROUS
AND MAY RESULT IN DEATH, SERIOUS BODILY
INJURY, AND/OR DAMAGE TO PROPERTY. FOLLOW THESE WARNINGS AND THE OTHER WARNINGS AND INSTRUCTIONS CONTAINED IN THIS
OPERATOR’S MANUAL CAREFULLY!!!
GENERAL WARNINGS
DO NOT HANDLE OR FIRE THE RIFLE BEFORE CARFEULLY
READING AND UNDERSTANING THIS MANUAL AND RECEIVING FIREARMS TRAINING FROM A COMPETENT INSTRUCTOR.
DO NOT FIRE THE RIFLE WITHOUT PROPER EYE AND
HEARING PROTECTION BEING WORN BY THE OPERATOR
AND ALL BYSTANDERS.
DO NOT HANDLE, DISASSEMBLE, OR ASSMBLE THE RIFLE
WITHOUT WEARING PROPER EYE PROTECTION.
DO NOT LOOK INTO OR PUT ANY PART OF YOUR BODY
NEAR THE MUZZLE OR EJECTION PORT WHILE FIRING OR
MANUALLY CYCLING THE RIFLE.
DO NOT USE ANY AMMUNITION OTHER THAN NEW, UNDAMAGED, COMMERCIALLY MANUFACTURED AMMUNITION WHICH MEETS SAAMI SPECIFICATIONS OF THE
PROPER CALIBER FOR THE CONFIGURATION OF THE RIFLE.
DO NOT CHAMBER A ROUND UNLESS THE BARREL IS
POINTED IN A SAFE DIRECTION.
WARNING
DO NOT FIRE THE RIFLE WITH ANY OBSTRUCTION OR
WATER IN THE BARREL.
DO NOT STRIKE THE BUTT OF THE RIFLE ON THE GROUND
OR ANY HARD SURFACE WITH THE BOLT HELD OPEN AND
A LOADED MAGAZINE IN THE RIFLE.
DO NOT LEAVE A ROUND IN THE CHAMBER OF A RIFLE
WHICH HAS BEEN FIRED 210 OR MORE ROUNDS WITHIN 5
MINUTES AS IT MAY SPONTANEOUSLY FIRE (COOK OFF).
DO NOT MANUALLY CLEAR A ROUND FROM THE CHAMBER IF THE RIFLE IS HOT AND IF THE ROUND HAS BEEN IN
THE CHAMBER FOR MORE THAN 10 SECONDS.
DO NOT CONTINUE TO FIRE IF THE RIFLE SOUNDS MORE
QUIET THAN USUAL OR THE RECOIL IS LIGHTER.
DO NOT POINT THE FIREARM AT ANYTHING YOU DO NOT
INTEND TO SHOOT.
DO NOT PLACE YOUR FINGER ON THE TRIGGER UNTIL
YOU ARE IN A STABLE SHOOTING POSITION AND HAVE
THE INTENDED TARGET IN YOUR SIGHTS.
DO NOT FIRE THE RIFLE UNLESS YOU ARE SURE OF YOUR
TARGET AND THERE IS AN ADEQUATE BACKSTOP.
DO NOT FIRE THE RIFLE AT WATER OR HARD OBJECTS.
DO NOT LEAVE YOUR RIFLE WHERE CHILDREN OR OTHER
UNAUTHORIZED PERSONS WILL HAVE ACCESS TO IT.
(WARNINGS ARE CONTINUED ON THE NEXT PAGE.)
WARNING
XCR SPECIFIC WARNINGS
SET THE STOCK AT THE PROPER LENGTH SO THAT YOUR
FACE IS AWAY FROM THE END OF CHARGING HANDLE
SLIDE WHEN THE SLIDE IS FULLY RETRACTED. INSTRUCTTIONS FOR SETTING STOCK LENGTH ARE FOUND
ON PAGE 37.
DO NOT FIRE THE RIFLE UNLESS THE UPPER AND LOWER
RECEIVERS ARE PROPERLY LOCKED. SEE PAGE 12.
DO NOT ATTEMPT TO LOAD OR FIRE THE RIFLE WITHOUT
THE BARREL BEING PROPERLY INSTALLED. SEE PAGE .31
TABLE OF CONTENTS
RIFLE DESCRIPTION ·············································· 1
SPECIFICATIONS ··················································· 2
TERMINOLOGY ·················································· 3-4
LOADING ························································· 5-10
FIRING ··························································· 11-13
GAS ADJUSTMENT ·········································· 13-14
BREAK IN ··························································· 16
UNLOADING ··················································· 15-16
DISASSEMBLY ················································ 17-23
CLEAN, INSPECT, LUBRICATE ·························· 24-29
ASSEMBLY ····················································· 30-33
1913 RAILS/ACCESSORIES ···································· 34
CALIBER CONVERSION ···································· 35-36
FOLDING STOCK ················································· 37
TROUBLESHOOTING ······································· 38-39
WARRANTY/LIABILITY DISCLAIMER ················ 40-41
DESCRIPTION
1
The XCR is truly a unique rifle. It was designed from the
ground up to have excellent ergonomics, accuracy, durability, reliability, and modularity.
Ergonomics. The XCRs controls were designed so that the
operator can manipulate them while keeping his eyes and
sights on target. The controls are ambidextrous and intuitive. These ergonomics give the operator a crucial time
advantage when loading, changing magazines, or clearing
malfunctions.
Accuracy. Though not designed as a match rifle, the XCR
delivers great accuracy. Its fully floated barrel combined
with a light two-stage trigger make consistent accuracy
easy.
Reliability and Durability. Most rifles developed in the
west are based on Eugene Stoner’s AR-15/M-16 rifle. The
XCR has more similarities to Mikhail Kalashnikov’s AK47. The XCR operates via a heavy duty, piston driven, rotating bolt combined with a strong extractor and solid ejector. These elements result in excellent reliability and durability.
Modularity. The XCR is truly a modular rifle system. The
XCR has a serialized lower receiver to which can be added
a variety of upper receivers accepting barrels in lengths
from 7.5” to 18.6” in many different calibers. Its quick
change barrel system allows caliber and/or barrel length
changes in minutes. These features allow the XCR to be
quickly configurable for any mission.
DESCRIPTION
2
XCR-M (Medium) Specifications (Mini & Standard)
Operation:
Piston Driven, 3 Lug, Rotating Bolt
Barrel:
Quick Change, Fully Floated
Calibers:
7.62 NATO (.308), .260 Rem., & more
Muzzle Threads
5/8x24
Muzzle Devices
Brakes, Flash Hiders, & Suppressors
Length Overall:
34” to 40”
Length Overall Folded: 25” to 31”
Weight (Empty):
8.5 to 10 Pounds
Upper Rail
Integrated, 18.5 to 20” 1913 Standard Rails
Side & Bottom Rails
Integrated, 8.15” to 9.5”
Magazines
SR-25 Type
Trigger
Two-Stage, 4.5 Pound Pull
Safety Selector
Ambidextrous, 45 Degree Throw
Magazine Release
Ambidextrous
Bolt Catch
Ambidextrous
Charging Handle
Left Side, Non-Reciprocating
Pistol Grip
Accepts AR-15/M-16 Grips
Stock Adjustment
Folding, Length, and Height
Stock Length of Pull
10.5” to 13.5’ in 6 increments of .5”
Cheek Rest Adjustment Two positions .25” Apart
Stock Height
Three Positions .25” Apart
XCR MEDIUM FIELD STRIPPED
TAKE TIME TO THOROUGHLY FAMILIARIZE YOURSELF WITH THE TERMS IN THIS SECTION DESCRIBING THE FEATURES AND COMPONENTS OF THE XCR AS THEY WILL BE REFERRED TO THROUGHOUT THIS MANUAL.
TERMINOLOGY
3
XCR MEDIUM RIGHT & LEFT VIEWS
TERMINOLOGY (CONTINUED)
4
LOADING
5
WARNING
USE ONLY NEW, UNDAMAGED, COMMERCIAL AMMUNITION MEETING SAAMI SPECIFICATIONS OF THE PROPER CALIBER WITH THE RIFLE. THE CALIBER OF THE
RIFLE IS MARKED ON THE TOP OF THE BARREL NEAR
THE MUZZLE. ALWAYS WEAR PROPER EYE PROTECTION WHILE HANDLING OR FIRING THE RIFLE.
1. Load a magazine of the proper caliber with the number of rounds
for which the Magazine was designed. Do not overload the Magazine. If the Magazine is difficult to insert into the Rifle, you may
want to reduce the number of rounds loaded in the Magazine by one
or two rounds.
LOADING
6
1. While pulling the Charging Handle fully to the rear with one hand,
engage the Bolt Catch by pushing it upward with the index finger of
your other hand.
2. Rotate the Selector so that the Indicator is next to the image of
bullet with an X over it. This is the Safe position. (NOTE: The
Safety Selector cannot be moved to the Safe Position if the rifle has
been dry fired and the Charging Handle has not been pulled back.)
LOADING (CONTINUED)
7
WARNING
KEEP THE RIFLE POINTED IN A SAFE DIRECTION AT
ALL TIMES.
DO NOT INSERT A LOADED MAGAZINE INTO THE RIFLE
UNTIL YOU HAVE MADE SURE THE THERE IS NO OBSTRUCTION IN THE BARREL OR CHAMBER. DO NOT
LOOK DOWN THE BARREL UNLESS THE RIFLE IS UNLOADED AND THE BOLT REMOVED (SEE PAGES 15-16).
DO NOT STRIKE THE BUTT OF THE RIFLE ON THE
GROUND OR ANY HARD SURFACE WITH THE BOLT
HELD OPEN AND A LOADED MAGAZINE IN THE RIFLE.
3. To insert the Magazine in the Rifle, hold the rifle by the pistol grip
with your dominant hand with your
finger off the trigger. Insert a loaded
magazine upward into the magazine
well with your other hand.
4. While holding the rifle with your
dominant hand with your finger off
the trigger, firmly tap the magazine
upward with the palm of your other
hand.
LOADING (CONTINUED)
8
5. Give the Magazine a good
tug to make sure it is securely
connected to the rifle.
WARNING
DO NOT CHAMBER A ROUND UNLESS THE BARREL IS
POINTED IN A SAFE DIRECTION. KEEP YOUR FINGER
OFF THE TRIGGER WHILE CHAMBERING A ROUND.
6. With the Bolt held in the open position by the Bolt Catch, depress
the Bolt Catch with your trigger finger to close the Bolt and chamber
a round.
LOADING (CONTINUED)
9
7. To chamber a round with the Bolt in the closed position, hold the
Rifle with your dominant hand with your trigger finger off the trigger, and pull the charging handle back as far as it will go.
8. Release the Charging handle cleanly. Do not ride the charging
handle forward.
LOADING (CONTINUED)
10
Use of the Forward Assist.
The Rifle comes with a Forward Assist mechanism built into the
Charging Handle. The purpose of the Forward Assist is to ensure the
Bolt Carrier is fully forward after it has been withdrawn partially by
the Charging Handle (as in the case of a chamber check).
WARNING
DO NOT FORCE A ROUND INTO THE CHAMBER. IF YOU
CANNOT CHAMBER A ROUND, STOP SHOOTING IMMEDIATELY, UNLOAD THE WEAPON (SEE PAGES 15-16),
AND CHECK THE CHAMBER, BORE, AND AMMUNITION.
DO NOT DEPRESS THE FORWARD ASSIST WHILE FIRING. DO NOT ALLOW ANYTHING TO DEPRESS THE FORWARD ASSIST WHILE FIRING.
The Forward Assist is used as follows: Pull the Charging Handle
back until it engages the bolt. Then depress the Charging Handle
while simultaneously pushing the Charging Handle forward.
FIRING
11
WARNING
DO NOT FIRE THE RIFLE WITHOUT PROPER EYE AND
HEARING PROTECTION BEING WORN BY THE OPERATOR AND ALL BYSTANDERS.
DO NOT LOOK INTO OR PUT YOUR FACE OR PART OF
YOUR BODY NEAR THE EJECTION PORT OR CHARGING
HANDLE WHILE FIRING OR MANUALLY CYCLING THE
RIFLE.
DO NOT PLACE YOUR FINGER ON THE TRIGGER UNTIL
YOU ARE IN A STABLE SHOOTING POSITION AND HAVE
THE INTENDED TARGET IN YOUR SIGHTS.
DO NOT FIRE THE RIFLE UNLESS YOU ARE SURE OF
YOUR TARGET AND THERE IS AN ADEQUATE BACKSTOP.
DO NOT FIRE THE RIFLE AT WATER OR HARD OBJECTS.
DO NOT ATTEMPT TO FIRE ANOTHER ROUND IF YOU
EXPERIENCE ANY PROBLEMS WITH THE RIFLE WHATSOEVER. IMMEDIATELY STOP SHOOTING AND REFER
TO THE TROUBLSHOOTING SECTION ON PAGES 40-41.
DO NOT LEAVE A ROUND IN THE CHAMBER IF YOU
HAVE FIRED 210 OR MORE ROUNDS WITHING A 5 MINUTE PERIOD. IT MAY SPONTANAEOUSLY FIRE (COOK
OFF).
FIRING (CONTINUED)
12
WARNING
DO NOT MANUALLY CLEAR A ROUND FROM THE
CHAMBER WHICH DOES NOT FIRE AFTER THE TRIGGER HAS BEEN PULLED UNTIL WAITING FOR 30 SECONDS.
NEVER FIRE THE RIFLE UNLESS THE UPPER AND LOWER RECEIVERS ARE PROPERLY LOCKED.
1. Make sure the Upper and Lower Receivers are properly locked.
They are properly locked when the Receiver Lock is flush with the
Lower Receiver as shown below.
RIGHT
WRONG, DON’T FIRE
2. To fire the Rifle, rotate the Safety Selector so that the Indicator is
next to the to the image of a bullet without an X through it. This is
the Fire position. In this position, the Rifle is ready to
fire if the trigger is pulled.
GAS ADJUSTMENT
13
3. Pull the trigger. For each trigger pull, one shot will be fired until
the magazine is empty.
4. When finished shooting, follow the Unloading procedure described on pages 15-16 of this manual.
WARNING
FOR SAFETY ALWAYS MAKE SURE THE RIFLE IS COOL
AND ALWAYS POINT THE MUZZLE OF THE RIFLE IN A
SAFE DIRECTION BEFORE MAKING GAS ADJUSTMENTS.
Gas Adjustment
The Rifle is equipped with a adjustable Gas Adjust Valve. The purpose of this device is to optimize the system for certain ammunition
and for certain environmental conditions. The Gas Adjustment
Valve has six Settings: Off (marked “0”) and 5 other settings. The
detent determines which setting the valve is on with “-” being the
GAS ADJUSTMENT
14
lowest setting and “+” being the
highest setting. Rotation towards
the “+” indicates a higher setting.
Rotation towards the “-” indicates a
lower setting. The first two settings
(- and the one next to it) are typically used for sound suppressors, and
the other 3 to adjust for ammunition
or environmental conditions.
Changing Gas Settings
1. Unload the Rifle according to Pages 15-16 and use the Bolt Catch
to hold the Bolt Carrier in the rearward position.
2. Depress the Gas Valve Detent with the tip of a cartridge while rotating the valve to the desired setting with the rim of another cartridge
as shown.
3. After you have rotated the Gas Valve to the desired setting, release
the Gas Valve Detent.
4. After releasing the Gas Valve Detent, you should not be able to
rotate the Gas Valve.
Break In It is recommended that the gas setting be left the “+” setting for at least the first 100 to 200 rounds.
TO ENSURE THE MILDEST RECOIL WITHOUT SACRIFICING
RELIABILITY, USE THE GAS SETTING WHICH THROWS THE
SPENT CARTRIDGE CASES
CLEAR OF THE FIREARM WITHOUT JAMMING. IF YOU FEEL
TRIGGER SLAP, THE GAS IS SET
TOO HIGH.
UNLOADING
15
WARNING
REMOVING THE MAGAZINE FROM THE RIFLE DOES
NOT MEAN THE RIFLE IS UNLOADED AS THERE MAY
STILL BE A ROUND IN THE CHAMBER. ALWAYS POINT
THE WEAPON IN A SAFE DIRECTION WHILE UNLOADING THE RIFLE. WHEN PULLING BACK ON THE
CHARGING HANDLE, ALWAYS MAKE SURE THE EJECTION PORT IS FACING THE GROUND. CARTRIDGES ARE
EJECTED WITH FORCE. WEAR EYE PROTECTION AT
ALL TIMES.
1. Remove the Magazine completely from
the Rifle by depressing
the Magazine Release.
The Magazine should
fall out of the Weapon
of its own weight.
2. With the ejection port facing the ground, pull the
Charging Handle all the way
back with one hand and engage the Bolt Catch by pushing it upward with the index
finger of the other hand. The
bolt should stay open.
UNLOADING (CONT.)
16
3. Rotate the Safety Selector so that the Indicator is next to the image
of a bullet with an “X” through it. This is the Safe position.
4. Check the chamber to make sure it is empty.
DISASSEMBLY
17
WARNING
BEFORE DISASSEMBLING THE WEAPON, MAKE SURE
THE WEAPON HAS BEEN UNLOADED (SEE PAGES 15-16).
DO NOT HANDLE, DISASSEBLE, OR ASSEMBLE THE RIFLE WITHOUT WEARING PROPER EYE PROTECTION.
Bolt Carrier Assembly Removal
1. While pushing the Receiver Lock toward the
Barrel of the Weapon, rotate the Lower Receiver
Away from the Upper Receiver.
2. Tip the Barrel up and
let the Bolt Carrier Assembly slide out of the
Upper Receiver. Be ready
to catch the internal parts
as they slide out. As they
slide out, hold the Operating Rod firmly against the
Bolt Carrier.
DISASSEMBLY (CONTINUED)
Bolt and Operating Rod Removal
1. Remove the Operating Rod from the Bolt Carrier.
2. Remove the Bolt from the Bolt Carrier.
3. Remove the Recoil Spring from the Operating Rod.
18
DISASSEMBLY (CONTINUED)
19
Extractor Removal
Remove the extractor by using a 5/64” flat nosed brass punch to force
the extractor away from the center of the bolt while pushing in on the
Extractor Detent. The Extractor Detent is not visible until the Extractor is moved toward the outside of the Bolt.
Firing Pin Module Removal
The firing pin is mounted in the
Firing Pin Module. It is recommended that you do not remove
the Firing Pin from the Firing Pin
Module. To remove the Firing
Pin Module from the Bolt Carrier,
follow these steps:
1. Using the tip of a cartridge or
punch, push the Firing Pin Module Retaining Pin from the Bolt Carrier.
2. Pull the Firing Pin
Module
from the
Bolt Carrier.
DISASSEMBLY (CONTINUED)
20
3. Remove the Recoil Buffer from the Bolt Carrier
WARNING
MAKE SURE THE BARREL IS COOL BEFORE TOUCHING
IT.
Barrel Removal
1. Using an 1/4” allen
wrench, unscrew the Barrel
Lock Bolt out approximately
1/4” or 3 full turns. It is not
necessary to remove the Barrel Lock Bolt completely.
(Note:
The Bolt Carrier must be Removed or retracted before the
Barrel can be removed.
DISASSEMBLY (CONTINUED)
2. Slightly rotate the barrel back
and forth to break it loose. Then
pull it out of the barrel
Removal of Gas Tube
Pull the Gas Tube out of the Upper Receiver.
21
DISASSEMBLY (CONTINUED)
Gas Piston & Gas Valve Removal
Using a 3/8 closed end
wrench, turn the Gas
Cap counter clockwise
and remove the Gas
Cap from the Gas
Block.
Slide the Piston out of
the Gas Block.
Remove the “C” Clip from the Gas
Valve. Constrain one end of the C
Clip with your finger an use a plastic
tool to push the other end off as
shown. Note: There is generally no
need to remove and clean the Gas
Valve unless the Gas Valve becomes
very difficult to turn or the Gas Adjustment doesn’t seem to be working.
22
DISASSEMBLY (CONTINUED)
23
Removal of the Lower Receiver
With the tip of a cartridge or with your finger, push the Receiver Pin
from Left to Right until it clicks into place. THE PIN IS MEANT
TO BE RETAINED IN ONE SIDE OF THE LOWER RECEIVER.
WARNING
REMOVAL AND REPLACEMENT OF THE FIRE CONTROL
PARTS SHOULD ONLY BE DONE BY A COMPETANT GUNSMITH.
MODIFICAITON OF ANY PART IS DANGEROUS , VOIDS
ALL WARRANTIES, AND MAY BE ILLEGAL.
DO NOT DRY FIRE THE RIFLE WHILE WITH THE UPPER
RECEIVER NOT ATTACHED TO THE LOWER RECEIVER.
CLEAN, INSPECT, LUBRICATE
24
WARNING
DO NOT HANDLE THE RIFLE OR ANY PARTS WITHOUT
WEARING PROPER EYE PROTECTION.
DO NOT ATTEMPT TO CLEAN, LUBRICATE OR INSPECT
THE RIFLE WITHOUT FIRST UNLOADING THE RIFLE
AND REMOVING THE BOLT CARRIER ASSEMBLY (SEE
PAGES 15-23).
DO NOT FIRE THE RIFLE IF ANY PART LOOKS DAMAGED IN ANY WAY.
Barrel
The Barrel may be cleaned while it is connected to the Upper Receiver or after it has been removed. It is always best to clean a barrel
from the chamber end.
1. Run a cleaning rod with a wire brush soaked with a bore cleaner,
through the bore several times. Push the brush completely through
the bore. Do not stop part way through the bore and change directions.
2. Next run a dry cloth through the bore. Then alternate running
cloths wet with bore cleaner and dry cloths through the bore until the
cloths come out clean.
3. Repeat step 2. until the cloth comes out clean.
4. Then run one cloth slightly oiled down the barrel.
NOTE: Do not leave harsh cleaners in the bore for more then 5
minutes as they may damage it.
5. Inspect the Bore and Chamber for obstructions.
CLEAN, INSPECT, LUBRICATE
25
Barrel Extension
1. The Barrel Extension can be cleaned with a toothbrush and powder solvent. Lightly lubricate the Barrel Extension with light oil
wiping away any excess lubricant.
2. Inspect the Barrel Extension for cracks or other damage.
Gas Block & Gas Valve
The Gas Block including the Piston and the Gas Valve do not need
cleaning unless:
1. The Piston will not slide in and out of the Gas Block on its own..
2. The Gas Valve is very difficult to turn. Or
3. Recoil is excessive even on low Gas Valve Settings.
To clean the Gas Block, Piston, and Gas Cap, use a powder solvent
(carbon dissolving) cleaner, such as Slip 2000 725 Gun Cleaner &
Degreaser, to remove the carbon buildup from inside and outside of
the Parts. DO NOT SCRAPE OR SAND THE OUTSIDE OF THE
GAS PISTON. If your Carbon dissolving cleaner is not doing the
job, you may use the following off the shelf drill bits to make sure the
holes of these parts have the carbon removed. These drill bits should
be turned by hand. DO NOT USE A DRILL OR OTHER POWER
TOOLS. If you increase the diameter of the holes in these parts, the
firearm may not function.
CLEAN, INSPECT, LUBRICATE
Drill Bit Size
Use to Clean Out Hole on Part
29/64
Large Hole in Gas Block
5/64
Piston and Gas Cap
No. 11 (.1910)
Small Hole in Piston
26
Gas Tube
1. Run a large copper brush wet with powder solvent through the
Gas Tube several times. Push the Brush through the gas tube completely each time.
2. Then alternate pushing dry and wet cloths through the Gas Tube
until the cloth comes out clean.
3. Repeat 1 & 2 above until clean.
4. Wipe residual powder solvent from the Gas Tube. Only slightly
lubricate the gas tube. Excess lubrication will only burn off.
WARNING
IF ANY PART OF THE BOLT OR FIRING PIN MODULE APPEAR TO BE DAMAGED IN ANY WAY OR THE FIRING PIN
DOES NOT MOVE FREELY, DO NOT CONTINUE TO FIRE
THE RIFLE.
Bolt
1. Clean the Bolt with powder solvent.
2. Lightly Lubricate wiping off any excess lubricant.
3. Inspect the bolt cam and lugs for
cracks. If cracks or other damage is
found, replace the Bolt.
CLEAN, INSPECT, LUBRICATE
27
Firing Pin Module
1. Clean the Firing Pin Module with powder solvent. When the
head of the Firing Pin is depressed, it should move in and out of
its housing freely without binding. IF IT BINDS AT ALL, DO
NOT USE IT. It is not recommended nor is it necessary to disassemble the Firing Pin Module for cleaning.
2. After cleaning, lubricate lightly and wipe off excess lubricant..
Extractor
It is NOT necessary to remove the Extractor for normal cleaning. If
you do remove it to check for wear and cracks, clean with powder
solvent and wipe away all excess residue before re-assembly.
Bolt Carrier and Operating Rod
1. Clean bolt Carrier and Operating Rod with a brush and powder
solvent.
2. Lubricate all the way along the Carrier and Operating Rod on
both sides at the points shown before installing them in the Upper
Receiver.
CLEAN, INSPECT, LUBRICATE
28
Upper Receiver
1. Clean the Upper Receiver with a powder solvent or in a part cleaning tank. DO NOT USE A WIRE BRUSH.
2. Wipe off residue.
3. Lubricate with LSA or other light lubricant. DO NOT USE
GRAPHITE LUBRICANTS.
4. Check the bolts on the following parts to make sure they are tight:
Ejector Bolts
Make sure the Ejector
is not loose. If it is,
remove the bolts, use
Loctite 242, and tighten the Ejector Bolts.
You will need to use
your Bolt Carrier and
Bolt to position the
Ejector.
Brass Defelector
Tighten the Brass Deflector bolt
with an allen wrench. Use Loctite 222 on the threads of the
bolt only. Once it begins to feel
tighter, turn 1/4 turn more. DO
NOT OVERTIGHTEN. If you
tighten too much, the bolt can
hit the carrier inside the receiver.
CLEAN, INSPECT, LUBRICATE
29
Lower Receiver
1. Clean the lower receiver with powder solvent or in a parts cleaning tank.
2. Wipe off residue.
3. Lubricate with light lubricant, wiping off excess lubricant.
4. Check the following bolts and the receiver buffer to make sure
they are tight and not damaged:
Stock and Selector Bolts
Make sure the Stock and Selector
Bolts are not loose. If they are,
remove, use Loctite 242, and then
re-tighten the bolts.
Bolt Catch Bolt
Make Sure the Bolt Catch Bolt is Tight. (Note: The Bolt Catch itself
is meant to have lots of wiggle room.) If the Bolt Catch Bolt is
loose, remove it,
use Loctite 222,
and then re-tighten
it.
ASSEMBLY
30
WARNING
DO NOT HANDLE THE RIFLE OR ANY PARTS WITHOUT
WEARING PROPER EYE PROTECTION.
Gas Block Assembly
1.
2.
3.
4.
Slide the Piston into the Gas Block.
Screw on the Gas Cap
Tighten hand tight then 1/4 Turn. Note: No Loctite is needed.
If the Gas Valve has been removed, Insert it into the Gas Block
and Replace the C Clip.
Barrel Installation
1. Slide the barrel into the Upper Receiver. The Gas Block should line up
with the Gas Tube as shown in the image
to the right.
2. Screw in the Barrel Bolt with a
1/4” Allen wrench. Lightly hand
tighten the screw. Over tightening
can ruin the Upper Receiver. Use
a maximum of 200 inch pounds.
If you do not have a torque
wrench, turn till hand tight then try
to turn another 70 degrees by hand
to ensure barrel is in tight.
ASSEMBLY (CONTINUED)
WARNING
DO NOT FORGET TO INSTALL THE RECOIL BUFFER.
MAKE SURE THE FIRING PIN MOVES IN AND OUT OF
THE FIRING PIN MODULE FREELY.
Bolt Assembly
1. Insert the Recoil Buffer into the Bolt Carrier.
2.
Insert the Firing Pin Module into
the Bolt Carrier. You
may have to twist it
some to get it past the
Recoil buffer.
3. Align the Firing Pin Module with
the hole in the Bolt Carrier and
Insert the Firing Pin Module Retaining Pin. Push in the Firing Pin
several times to make sure it
moves freely. It should be quite
stiff but move in and out without
getting stuck.
31
ASSEMBLY (CONTINUED)
4. While depressing the Extractor
Detent with the tip of a 5/64” flat
nosed brass punch, slide the Extractor into its groove in the Bolt.
Slide the Extractor in until it snaps
into place.
Bolt Carrier Assembly
1. Slide the Bolt Into the Bolt Carrier..
2. Slide the Recoil Spring into the Operating Rod.
3. Fit the Operating Rod to the Bolt Carrier.
32
ASSEMBLY (CONTINUED)
33
Lower Receiver Installation
1. Align the hole in the front of the Lower Receiver with the hole at
the midpoint of the Upper Receiver.
2. Push the Axis Pin of the Lower Receiver through the Upper Receiver.
Operating System Installation
Holding the Bolt Carrier and Operating Rod together with the Bolt
fully extended, slide the Bolt Carrier Assembly into the Upper Receiver.
WARNING
FOLLOW THE INSTRUCTIONS ON PAGE 12 TO
ENSURE THE UPPER AND LOWER ARE PROPERLY LOCKED.
Locking the Upper Receiver and Lower Receivers.
1. Depress the Receiver Lock
and simultaneously rotate the Upper Receiver towards the Lower
Receiver.
2. Once the Upper and Lower
mate, release the Receiver Lock.
1913 RAILS/ACCESSORIES
34
1913 Standard Rails
The Upper Receiver of the Rifle comes equipped with 1913 Standard
(“Picatinny”) Rails at the 3, 6, 9, and 12 O’clock positions.
The XCR does not come with any accessories on the Rails unless you
order them separately. Almost any accessory made for the M16/M4
type rifles can be attached to the Rails. The list includes, but is not
limited to:










Front and Rear Iron Sights,
Optical Sights,
Night Vision Equipment,
Laser Sights,
White Lights,
Rail Covers,
Forward Vertical Grips,
Bipods,
Grenade Launchers, and
Shotguns.
These accessories can be purchased through Robinson Armament Co.
and other vendors.
NOTE: The rails can be damaged if accessories are not properly installed.
CALIBER CONVERSION
35
Compatible M16/M4 Accessories
In addition to accessories which attach to the Rails, there are other
M16/M4 accessories which are compatible with the. These are as
follows: most pistol grips, and most barrel compensators and flash
hiders.
Additionally, Robinson Armament Co. offers a stock adapter which
will allow the installation of most M4 buttstocks which use the standard M4 buttstock tube.
WARNING
Caliber Conversion Kits
WHEN INSTALLING A CALIBER CONVERSION
KIT, MAKE SURE TO THE AMMUNITION YOU
ARE USING MATCHES THE CALIBER OF THE
BARREL YOU ARE USING.
The XCR-M was designed to fire almost any cartridge based on
the .308 cartridge case. Since all these cases have the same head and
rim, it is only necessary to change the barrel when changing calibers.
For some calibers or configurations, a different brass deflector may
also be needed.
Barrels for the XCR-M are marked with the caliber and rate of twist
on the top of the barrel near the muzzle device.
Follow these instructions to change the caliber.
CALIBER CONVERSION
36
Disassembly.
1. Unload the Rifle. Follow instructions on pages 15-16.
2. Remove the Barrel. Follow instructions on pages 20-21.
3. Replace the Brass Deflector if necessary.
Re-assembly.
1. Install the Barrel of the new caliber. Follow instructions on page
31.
FAST STOCK
XCRs are now equipped with a fully
adjustable stock (FAST). It is deployed and folded by means of a Button located on the bottom of the hinge
mechanism.
To fold the stock remove the
stock from you shoulder, and
push the button upward. Note:
if you put any pressure on the
stock, you will have a difficult
time pushing up on the button.
To deploy the stock, push the
button upward and flick the
stock into place with you trigger
finger. Or, raise the rifle vertically and push the button up.
The stock will swing into place.
On the bottom of the FAST Stock is the Stock
Length Adjustment Button. When depressed,
the stock can be adjusted for length. Also found
on the bottom of the Stock is a hole where a QD
Sling Swivel may be attached. Additional sling
mounting points can be added to the 1913 Rails.
37
TROUBLE SHOOTING
38
WARNING
DO NOT ATTEMPT TO TROUBLESHOOT ANY MALFUNCTION OF THE RIFLE UNTIL THE RIFLE HAS BEEN UNLOADED ACCORDING TO PAGES 15-16. ALWAYS KEEP
THE RIFLE POINTED IN A SAFE DIRECTION.
IF THE RIFLE MALFUCTIONS AFTER FOLLOWING THIS
TROUBLESHOOTING SECTION, STOP SHOOTING IMMEDIATELY AND CONTACT THE MANUFACTURER.
IF THE RILFE DOUBLE FIRES OR SLAM FIRES, STOP
SHOOTING IMMEDIATELY AND CONTACT THE MANUFACTURER.
The Malfunction Matrix on the next page lists some possible malfunctions, gives their probable causes, and states likely solutions.
The following are some definitions used:
Bolt Over Base. This occurs when the Bolt does not get behind the
base of the next round in the magazine. The Bolt strikes the body of
the next round but does not chamber it.
Empty Case in Chamber. This occurs when the Bolt does not travel
far enough for the case to hit the ejector. Consequently, the empty
and expanded case is shoved back into the chamber where it sticks.
To clear this case from the chamber, hit the Charging Handle with the
side of your hand or with some other soft object.
Empty Case Caught in Action. Some refer to this as a stove pipe.
The case was extracted from the chamber but not ejected from the
receiver.
Bolt Catch Doesn’t Catch. When the bolt does not stay open (or
Catch) after the last round is fired.
Clean
Lubricate
Set Gas Adjustment Higher
Clean
Lubricate
Loctite & Tighten
Excessively Dirty Upper Receiver
No Lubrication
Gas Adjustment set too low
Excessively Dirty Upper Receiver
No Lubrication
Ejector has come loose
Fix or Replace Parts
Replace Parts
Set Gas Adjustment Higher
Gas Adjustment set too low
Parts are missing
Lubricate
No Lubrication
Loctite & Tighten
Clean
Excessively Dirty Upper Receiver
Parts have come loose
Solution
Set Gas Adjustment Higher
Cause
Gas Adjustment set too low
Double Fire or Slam Fire –
Firing Pin Module damaged
STOP SHOOTING IMMEIATEFiring Pin Spring is not working.
LY
Bolt Catch Doesn't Catch
Empty Case Caught in Action
Empty Case in Chamber
Malfunction/Symptom
Bolt Over Base
MALFUNCTION MATRIX
TROUBLE SHOOTING (CONTINUED) 39
WARRANTY
40
LIMITED ONE YEAR WARRANTY
Robinson Armament Co. warrants to the initial retail purchaser that the Rifle will
be free of defects in material or workmanship for a period of one year from the date
of purchase.
This warranty shall not cover any damage or condition determined by Robinson
Armament Co. to be caused by carelessness, negligence, misuse, normal wear and
tear, or failure to properly maintain the product, or by unauthorized repairs or modifications. The foregoing warranty is exclusive and in lieu of all other warranties of
quality, whether written, oral, or implied including but not limited to any warranty
of merchantability or fitness for purpose.
LIABILITY DISCLAIMER
Robinson Armament Co assumes no responsibility for damage and/or injury caused
in whole or part by hand-loaded, reloaded, remanufactured, military surplus, or
defective ammunition (“Improper Ammunition”). Under no circumstances shall
Robinson Armament Co. be held responsible for incidental or consequential damages with respect to economic loss, injury, or damage to property, arising out of the
use of Improper Ammunition, unsafe handling, misuse or unauthorized modifications to the Rifle. Robinson Armament Co. and shall not be responsible for damage
or injury resulting from careless handling, unauthorized repairs or modifications,
corrosion, neglect, or misuse. Robinson Armament Shall not be held responsible
for any unlawful possession or use of the Rifle.
ROBINSON ARMAMENT CO.’S OBLIGATIONS WITH RESPECT TO THE
RIFLE ARE STRICTLY LIMITED TO THE FOREGOING ONE YEAR WARRANTY. THE FOREGOING WARRANTY IS THE ONLY WARRANTY
MADE BY ROBINSON ARMAMENT CO. AND ROBINSON ARMAMENT
CO. DOES NOT MAKE AND YOU HEREBY EXPRESSLY WAIVE ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
LIMITATIONS OF LIABILITY. ROBINSON ARMAMENT CO. SHALL NOT
HAVE ANY LIABILITY WITH RESPECT TO ITS OBLIGATIONS UNDER
THIS AGREEMENT OR OTHERWISE FOR LOSS OF GOODWILL, OR FOR
SPECIAL, INDIRECT, CONSEQUENTIAL, OR INCIDENTAL DAMAGES,
WHETHER IN TORT OR IN CONTRACT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL ROBINSON ARMAMENT CO.’S LIABILITY UNDER THIS AGREEMENT EXCEED THE
AMOUNT PAID OR PAYABLE BY YOU FOR THE RIFLES UNDER THIS
WARRANTY
41
AGREEMENT. WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, ROBINSON ARMAMENT CO. SHALL NOT BE LIABLE FOR AND YOU
SHALL DEFEND, INDEMNIFY AND HOLD ROBINSON ARMAMENT CO.
HARMLESS FROM ANY DAMAGE OR INJURY WHICH RESULTS FROM
THE IMPROPER USE OF THE PRODUCTS, MODIFICATION TO THE PRODUCTS, ILLEGAL USE OF THE PRODUCTS, OR FAILURE TO FOLLOW THE
WARNINGS CONTAINED IN THE OPERATORS’ MANUAL FOR THE
PRODUCTS.
By using the Rifle you acknowledge that you have read the Owner’s Manual including all warnings and instructions and that you agree to these terms and conditions. It is your responsibility to understand, possess and use the rifle in compliance with all applicable federal, state, and local laws.
To receive warranty coverage, you must register your Rifle with Robinson Armament Co. by copying this page and the adjacent page, signing it and mailing or
electronically transmitting it to Robinson Armament Co. with the information below.
First Name:
Last Name:
Address:
City:
State:
Zip:
Daytime Phone:
Date of Purchase:
Dealer Name:
Dealer Address:
Model:
Serial #:
Signature:
Phone: 801-355-0401
Fax: 801-337-2281
Email: [email protected]
42
ROBINSON ARMAMENT CO.
WWW.ROBARM.COM
TEL: 801-355-0401 Email: [email protected]